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Juan Martin del Potro reaches the Round of 16 at the Rolex Shanghai Masters.

Tests Reveal Del Potro Patella Fracture

Argentine was forced to retire against Borna Coric at Rolex Shanghai Masters

Medical tests have revealed that World No. 4 Juan Martin del Potro suffered a fracture of his right patella bone at the Rolex Shanghai Masters.

"It's a very difficult moment," said Del Potro, who is wearing a split on his right leg. "I feel very sad. It's a hard blow that leaves me without strength. It's very difficult for me to think about recovery again, I did not expect this to happen."

The 30-year-old was coming off back-to-back final appearances at the US Open and China Open, when he suffered the injury at the ATP World Tour Masters 1000 stop in Shanghai. After defeating Richard Gasquet, he would retire from his Round of 16 encounter against Borna Coric after dropping the opening set. 

Del Potro, who is in the midst of arguably his greatest campaign on the ATP World Tour, is up to third in the ATP Race To London and has already secured his return to The O2 for the Nitto ATP Finals. The extent of the injury is unknown and his doctors will evaluate the recovery process in the coming days.

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